I have the 600T and its massive. Its got one major flaw though that it makes these expansion "cracking" sounds every once in a while. Even when its turned off, I hear "pop" sounds. I know its odd, but it still happens to me. Thinking back, I would have gotten the corsair 650D.

My 600T makes the same noises as well, I even have the 2 different side panels for it (solid / windowed) It's freaky, but i'm getting used to it, as well as turning up the sound to drown it out.